Gastrin causes
A) inhibition of HCl secretion.
B) increases in the secretion of chief cells and parietal cells.
C) the conversion of pepsin into pepsinogen.
D) the upper esophageal sphincter to open.
E) the pyloric sphincter to alternately open and close.
B) increases in the secretion of chief cells and parietal cells.
You might also like to view...
During exhalation of the first breath, the lungs do not collapse completely again in a newborn infant because
A) the incoming air is warmed by the upper portion of the respiratory tract, and this causes the lung tissues to expand and remain larger in size than previously, even when emptied of air. B) surfactant covering the alveolar surfaces prevents their collapse. C) exhalation is never as forceful as is inhalation. D) cartilages and connective tissues keep the conducting passageways closed. E) None of the answers are correct.
Changes in stomach activity as the stomach stretches with food are most closely associated with:
a. external influences b. local changes in the digestive tract c. intrinsic nerve plexus d. extrinsic autonomic nerves e. gastrointestinal hormones
The skull consists of ________ cranial bones and ________ facial bones.
A. 5, 7 B. 7, 12 C. 8, 14 D. 10, 12 E. 9, 11
Negative feedback is a self-amplifying chain of events that tends to produce rapid change in the body
Indicate whether the statement is true or false